249344231 has 2 divisors, whose sum is σ = 249344232. Its totient is φ = 249344230.

The previous prime is 249344213. The next prime is 249344243. The reversal of 249344231 is 132443942.

Together with previous prime (249344213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249344231 is a prime.

It is a super-2 number, since 2×249344231² = 124345091065962722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249344281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124672115 + 124672116.

It is an arithmetic number, because the mean of its divisors is an integer number (124672116).

Almost surely, 2^249344231 is an apocalyptic number.

249344231 is a deficient number, since it is larger than the sum of its proper divisors (1).

249344231 is an equidigital number, since it uses as much as digits as its factorization.

249344231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 249344231 is about 15790.6374475510. The cubic root of 249344231 is about 629.4092311930.

The spelling of 249344231 in words is "two hundred forty-nine million, three hundred forty-four thousand, two hundred thirty-one".